23295503440 has 80 divisors (see below), whose sum is σ = 59331577536. Its totient is φ = 8435865600.

The previous prime is 23295503431. The next prime is 23295503477. The reversal of 23295503440 is 4430559232.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 23295503440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157159 + ... + 267001.

Almost surely, 2^23295503440 is an apocalyptic number.

23295503440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23295503440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29665788768).

23295503440 is an abundant number, since it is smaller than the sum of its proper divisors (36036074096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23295503440 is a wasteful number, since it uses less digits than its factorization.

23295503440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110108 (or 110102 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 37.

The spelling of 23295503440 in words is "twenty-three billion, two hundred ninety-five million, five hundred three thousand, four hundred forty".